I try to make everything as simple as possible, which always makes things easier and almost always makes things better. As a result, I've never even thought about using capers; I don't even know what they are. If I could find the ideal tomato product (which I'm sure exists), I would never need to process it. The tomato product would go straight from the can to the container, and I'd only add a few extra flavors, which may include salt, garlic, and/or basil, and probably nothing else. Simplicity.